I can't say about whether we are interested in such project or not - Tsvetan can say about it; however I noticed that the Volta project is open-source, made with KiCAD and files published over GitHub - which is very nice for a change.

This seems less capable than A13 so why we do need it?900Mhz single core, no graphics, 1 USB-OTG$4.28 at 1064 pcs in Digikey

Before someone say long term availability, we sell A13 for more than 7 years now and still can buy it even Allwinner officially obsoleted it. Thanks for Linux Sunxi community A13 has mainline support and we work to release Debian image with 4.20 kernel this month.